Hello,sir
I've read your job description and understood your requirements.
As I am a senior Ruby on Rails expert, I am very interested in your project.
I've many experiences and strong skills for 7 years.
By using Ruby on Rails,Angularjs,Mongodb and Bootstrap I have developed many projects.
If you award me, I am able to start the project right now and I will devote my full time for you.
And also, I will provide good result full matched with your requirements.
Looking forward to hearing from you soon.
Best regards.
ZhangWei